While Dibben said he was "gutted" by his disqualification he accepted the rules.
What he found difficult was the controversy surrounding a fall and remount by Hart during round one at Hampton Downs.
Hart allegedly fell and remounted to finish third in one race at Hampton Downs, but the incident was not picked up by officials or reported within the 20 minute timeframe to protest after the race.
"You can't see all of the track at Hampton Downs, but there's nowhere to hide at Manfeild," Dibben said.
The Cemetery Circuit around the streets of Wanganui is Dibben's favourite track in the three-meeting series and all he can hope for is that his fellow Wanganui riders Brown and Dowman get between him and Hart on Boxing Day.
"Aden and Ben are racing well. I plan to be out in front at Wanganui and hopefully they can get between me and Duncan. I would have loved to have won the title for the third time - it was my goal," Dibben said.